Ensure the24-pin ATX and8/4-pin CPU power connectors are firmly plugged into the motherboard. If your CPU has onboard video, remove the discrete GPU and display from the motherboard's video outputs to rule out GPU issues.
MSI MAG B460M MORTAR Intel 10th Gen LGA1200 DDR4 mATX Motherboard
Combo -MSI MAG B460M Mortar mATX Motherboard LGA1200 + i5-10400
MSI MAG B460M Mortar mATX Motherboard LGA1200 10th Gen Intel i9-10900K i7-10700K
MSI MAG B460M MORTAR B460 Motherboard LGA 1200 ddr4 MATX Motherboard Tested
MSI MAG B460M MORTAR IntelB460 LGA1200 DDR4 M-ATX HDMI DP VGA Motherboard in box
